Compilare: user.cpp: In function ‘void readdata()’: user.cpp:13: warning: format ‘%s’ expects type ‘char*’, but argument 2 has type ‘char (*)[1005]’ user.cpp:10: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:13: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:18: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:19: warning: ‘p1’ may be used uninitialized in this function user.cpp:19: warning: ‘p2’ may be used uninitialized in this function user.cpp:19: warning: ‘p3’ may be used uninitialized in this function user.cpp:19: warning: ‘p4’ may be used uninitialized in this function